结果：DCG I诊断十二指肠间质瘤的准确度为10/18例；
目的：分析胃肠双对比造影(DCG I)和CT对十二指肠间质瘤的诊断价值。
Purpose: To analyse of the diagnostic value of double contrast gastrointestinal imaging (DCGI) and CT for duodenal stromal tumors.
材料和方法：回顾性分析18例原发性十二指肠间质瘤的DCG I和CT影像，对比两种方法单独诊断及联合诊断的价值。
Materials and Methods: the imaging findings of 18 patients with primary duodenal stromal tumors were analysed retrospectively, to compare the diagnostic evaluation with DCGI, ct and both of them.
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